Martlet van buren etheidge



(No Model.)

M. V. B. BTHRIDGE.

SHOE HEBLING MAGHINE.

Patented Peb. 6, 1883.

'Unirse Sterns ArtNr erica vMARTIN VAN BUREN ETHRIDGE, OF BOSTON,MASSACHUSETTS, ASSIGNOR TO THE ETHRIDGE HEELING MACHINE COMPANY, OF SAMEPLACE,

SHOE-HEELING MACHINE.

SLDECIFICATON forming part of Letters Patent No. 271,617, dated February6, 1883.

Appneanun filed November 29, 1882. (N0-model.)

To all 'whom it may concern:

Be it known that I, MARTIN VAN BUREN ETHRIDGE, of Boston, in the countyof Suffolk and State of Massachusetts, have invented an ImprovedShoe-Heeling Machine, of which the adjustment ofthe shoe-last, andimprovement in the metal heeling-plate and in the manner of releasingthe heel.

A specilic description of the various im-v proved parts and theirconstructionjis as follows, with due reference tothe drawings forming apart of this specification, in which- Figure l is a view in perspectiveof a machine embodying my improvements, Fig. 2 beingalongitudinalcentralse'ction ofthe same. Fig. 3 is a front elevation (enlarged scale)of portions of upper gate-head, frame, and releasing-levers, exhibitingthe vertical position of the latter in the upward movement of the gate.Fig. 4 is a similar view illustrating the inclined position ot' theupper lever when the gate is moving downward. Fig. 5 combines a faceplan and a longitudinal section ot` heelplate and connecting parts. Fig6 indicates a longitudinal vertical section in part oflower gate-head,with sliding block, stop-pin, and foot-lever inelevation. Fig. 7 is aside elevation of the last-jack attachment for regulating the horizontalposition of wooden shoe-last, with shoe thereon.

Referring to the letters, A A' are the upper and lower gate-heads,united by two guiderods, B B. The vertical movement of the gate isimparted through the rotation of the cam C within a strap, D, secured tothe lower gatehead, A', said gate being sustained in its po;

sitions of rest through a properly-regulated friction of its parts.

On the upper and left side ot' the lower gatehead, A', is a slidingblock, E, moving in a depressed bed in said gate, and operated throughthe action of the foot-lever F, to which it is attached by the stud andfriction-roll Gr.

A counter-weight, H, is attached to the upper arm of the foot-lever,retaining the sliding block E in its normal position of rest until movedby foot-pressure up against the springcushioned stop-pin I, whichretards the movement ot' said block E until the rotation ofthe cam Odownward overcomes the resistance of the lifting-spring J and pressesthe stop-pin I to a level with the lower face ofthe sliding block E,which then moves forward until again retarded by the cam O. In therelative positions of the block and cam the stop-pin I is so arrangedthat the action of said block and cam is simultaneous in holding thestop-pin (see Fig. 6) until the continued rotation ot' the cam allowsthe sliding block to pass over the stoppin and assume its positionbeneath the cam, acting as a stop-motion, for which this device isintended, until the block is released by the foot ofthe operator, and isdrawn back to its normal position b v the counter-weightH.

Forming an integral part of' the upper gatehead, A, is a projection, K,the face or under side of which is' provided with suitable guides, n n,or grooved to admit and suspend the adjustablemetal heel-plates M andM', the former of which has an inclined face, smoothly tinished tooperate upon the face or top lift ot the heel, and is placed in theguides n it in a position that coincideswith the angle or pitch of theheel to be nailed.

VThe heel-block K is centrally bored to receive the sliding pin N,retained in a proper position by the pushing-spring O. Secured to therear end of said pin by a grooved or dovetailed recess are the heel andshoe gaging levers P and P ',the latter of which is adjusted through theoperation of the thumbscrew Q and sliding bar R, and limits thehorizontal movement ofthe shoe or boot on the last-jack standard S. vThevertical position or height of said standard is regulated by theadjustable index-point and scale T, secured to bed of fraaie.

Keyed to the front end of the sliding pin N are two releasing-levers, Vand W, united by a toggle-joint and automatic in their action. The upperlever, W, operates against a projection, b, on the front face ot' theI'ramehead b' when the gate is moving upward, and releases the heel fromthe clamping-pins a a and heel-gage P after the completed operation ofnailing the heel to the shoe. The back of the upper releasing-lever, W,has a diagonal-shaped recess to admit the projection b when said leverhas reached its highest point. In thel movement ofthe gate downward theprojection b enters into the recess C, and, pressing against the angularwall ot' the same, forces the lever b laterally from its perpendicularposition and renders its function inoperative.

Attached to and forming a part of the lastjack standard S, through themedium of a thumb-screw, t, and slot t', is a rocker-lever, x, providedat its upper end with atogglepin, y, which enters the comb ot' thewooden last centrally near the heel. A spring, Z, is rigidly secured tothe rocker-lever and is provided with a toe-rest traversing said spring,and is secured at any desirable point, governed in its position by thelength or size of the last. The oliice of this spring Z is to insure astable rest tor the last on the jack, and obviates any oscillation ormovementof said last occasioned through undue enlargement of thetoggle-pin hole in the comb of the last. The lower end of therocker-lever wis oli'set and curved radially lrom its point oi'attachment and at right angles with its arm. A set or thumb screw, t,enables the operator to key77 the lever an in any desirable positionagainst 'the base ot', the last-jack standard, changing the angle oftheshoe or last to suit any variation of the toggle-pin hole in the same.

e e are counterbalancing-weights operating cnnjointly with the cam asauxiliary lifting devices.

In the operation of shoe-heeling the workman forces the sliding pin Nwith the thumb, (shown at u, Fig. 2,) and places the prepared heel-faceupward between the clamping-pins a a and the heel-gage P, so that theexposed nail-heads rest in the depressions oi' the indented recess r inthe heel-plate M', with the breast ofthe heel toward the operator. Inthis position the gate is moved by the combined action of cam and blockdownward upon the lasted shoe, which latter is gaged to a properposition by the devices T, and P', above described. The upward rotationot' the cam against its strap D moves the gate upward, instantlya'ctuatil'ig the releasing-levers V and W' and disengagng the heel. Atthis moment the operator moves forward the last` jack and places the toplift upon the nails, which are left exposed to a length correspondingwith the depth ot' the recess r in the heelplate M', the movement of thejack bringing the heel in a vertical line with the center of the angleheel-plate M, to receive on the downward movement of the gate thepressure of said angleplate on the top or face lift, l'orciug it, downon the nails and completing the operation of heeliug.

Having explained the operation of my improved machine, what I claimis 1. In an improved machine for nailingheels, a movable gaie providedwith a block, K, hold ing an adjustable and reversible angle heelplate,M, and a recessed heel-plate, M', in combination with the heel and shoegagiug levers l and l", operating substantially as and for the purposeset forth.

2. In combination with the adjustable heelplates M and M', the slidingpin N, the releasing-leversV and \V,operating the heel gaging lever P,and shoe or last gaging lever P', arranged as set forth.

3. In a heelmgmachine, the automatic releasing-lever V and diagonalrecessed lever NV, operating in combination with the slidingspring-cushioned pin N, for the purpose set forth.

4. In combination with an adjustable lastjaclz, a lasting adjustmentcomprising the rocker-lever m, toggle-pin y, spring Z, and movabletoe-rest Z', all substantially as described.

5. ln combination with the rocker lever x and movable toe-rest Z', thetoggle-pin y, adjusta ble and operating in the comb ofa Wooden last, asand for the purpose specified.

6. The sliding block E, actuated by the lever F, and thespring-cushioned stop-pin I, in combination with the cam C, producingthe downward movement of the gate, all as described.

MARTIN VAN BUREN ETHRIDGE.

Witnesses:

WM. H. MILLER, Jo'rHAM E. MUNROE.

IOO

